<b>Synthesis of Pyrroles with Fused Carbocycles or Heterocycles from Weinreb</b>
<b>
<i>N</i>
</b>
<b>-Vinyl-α-amino Amides</b>
作者:Alfonso González-Ortega、Luis Calvo、Rodrigo Navarro、Mónica Pérez、María Carmen Sañudo
DOI:10.1055/s-2005-916037
日期:——
grated in cyclic systems. The selective reaction of the carboxamide group with organometallic compounds allowed us to obtain a great variety of the carbonyl intermediates analogous to the Knorr synthe- sis, which were thermally cyclized. The principal limitation of the method was due to the insolubility of some metallic intermediates as well as to the low nucleophilicity and stability of the enamine during
与多种碳环和杂环稠合的吡咯由集成在环状系统中的 Weinreb N-乙烯基-α-氨基甲酰胺制备。羧酰胺基团与有机金属化合物的选择性反应使我们能够获得多种类似于 Knorr 合成的羰基中间体,这些中间体经过热环化。该方法的主要限制是由于一些金属中间体的不溶性以及环化过程中烯胺的低亲核性和稳定性。